Cushing died on 11 March 1896, aged 55. The sign he had left on his office door read: "Called away by an important engagement. Back at 3 P.M. tomorrow." He had left to go to
St. Vincent's Hospital, and expected to be back at work the following day; however, he experienced "heart trouble", which, coupled with "other ailments", led to his death. He was buried in
Calvary Cemetery, Queens. Only a couple of his most intimate acquaintances knew of his health problems. ==Selected works==